/***************************************************************************
    copyright            : (C) 2008 by Scott Wheeler
    email                : wheeler@kde.org
 ***************************************************************************/

/***************************************************************************
 *   This library is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU Lesser General Public License version   *
 *   2.1 as published by the Free Software Foundation.                     *
 *                                                                         *
 *   This library is distributed in the hope that it will be useful, but   *
 *   WITHOUT ANY WARRANTY; without even the implied warranty of            *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the Free Software   *
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA         *
 *   02110-1301  USA                                                       *
 *                                                                         *
 *   Alternatively, this file is available under the Mozilla Public        *
 *   License Version 1.1.  You may obtain a copy of the License at         *
 *   http://www.mozilla.org/MPL/                                           *
 ***************************************************************************/

#include <memory>

#include "tbytevector.h"
#include "tdebug.h"
#include "id3v2tag.h"
#include "tstringlist.h"
#include "tpropertymap.h"
#include "tagutils.h"

#include "aifffile.h"

using namespace Strawberry_TagLib::TagLib;

class RIFF::AIFF::File::FilePrivate {
 public:
  FilePrivate() : hasID3v2(false) {}

  std::unique_ptr<AudioProperties> properties;
  std::unique_ptr<ID3v2::Tag> tag;

  bool hasID3v2;
};

////////////////////////////////////////////////////////////////////////////////
// static members
////////////////////////////////////////////////////////////////////////////////

bool RIFF::AIFF::File::isSupported(IOStream *stream) {

  // An AIFF file has to start with "FORM????AIFF" or "FORM????AIFC".

  const ByteVector id = Utils::readHeader(stream, 12, false);
  return (id.startsWith("FORM") && (id.containsAt("AIFF", 8) || id.containsAt("AIFC", 8)));

}

////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////

RIFF::AIFF::File::File(FileName file, bool readProperties, AudioProperties::ReadStyle) : RIFF::File(file, BigEndian), d(new FilePrivate()) {

  if (isOpen())
    read(readProperties);
}

RIFF::AIFF::File::File(IOStream *stream, bool readProperties, AudioProperties::ReadStyle) : RIFF::File(stream, BigEndian), d(new FilePrivate()) {

  if (isOpen())
    read(readProperties);
}

RIFF::AIFF::File::~File() {
  delete d;
}

ID3v2::Tag *RIFF::AIFF::File::tag() const {
  return d->tag.get();
}

RIFF::AIFF::AudioProperties *RIFF::AIFF::File::audioProperties() const {
  return d->properties.get();
}

bool RIFF::AIFF::File::save() {
  return save(ID3v2::v4);
}

bool RIFF::AIFF::File::save(ID3v2::Version version) {

  if (readOnly()) {
    debug("RIFF::AIFF::File::save() -- File is read only.");
    return false;
  }

  if (!isValid()) {
    debug("RIFF::AIFF::File::save() -- Trying to save invalid file.");
    return false;
  }

  if (d->hasID3v2) {
    removeChunk("ID3 ");
    removeChunk("id3 ");
    d->hasID3v2 = false;
  }

  if (tag() && !tag()->isEmpty()) {
    setChunkData("ID3 ", d->tag->render(version));
    d->hasID3v2 = true;
  }

  return true;

}

bool RIFF::AIFF::File::hasID3v2Tag() const {
  return d->hasID3v2;
}

////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////

void RIFF::AIFF::File::read(bool readProperties) {

  for (unsigned int i = 0; i < chunkCount(); ++i) {
    const ByteVector name = chunkName(i);
    if (name == "ID3 " || name == "id3 ") {
      if (!d->tag) {
        d->tag.reset(new ID3v2::Tag(this, chunkOffset(i)));
        d->hasID3v2 = true;
      }
      else {
        debug("RIFF::AIFF::File::read() - Duplicate ID3v2 tag found.");
      }
    }
  }

  if (!d->tag)
    d->tag.reset(new ID3v2::Tag());

  if (readProperties)
    d->properties.reset(new AudioProperties(this, AudioProperties::Average));

}
